Oxazole complexes. Part I. N-Bonded complexes of benzoxazole with cobalt(II), nickel(II), copper(II), and zinc(II)

Abstract

The preparation is described of some complexes of benzoxazole (L) with halides and nitrates of Co(II), Ni(II), Cu(II), and Zn(II)(M). With the exception of CuBr₂L, all halide complexes were of the type ML₂X₂; with the exception of CuCl₂L₂, which was planar, the complexes had either tetrahedral or octahedral stereochemistry. The octahedral complexes all contained bridging halide atoms. Co(II) and Ni(II) nitrates formed the dihydrate, concontaining unidentate nitrate; heating to 140° dehydrated the complex, resulting in complexes containing bidentate nitrate groups.